Does only what it says. Wish for more functions.

The pro is that it can add subtitles even for DRM protected movies bought from iTunes.

The cons are as following:
1. It made the m4v media file size larger by a liitle bit for every "save file" action, even if no action was done at all!
2. "Chapters" information is lost after the media file is saved and reopened.

There are many improvements left to be done. Keep going, the price is very high for current basic funtion offered.

Kamiwaza about iSubtitle